[GRASS-dev] [GRASS GIS] #2532: TypeError: environment can only contain string when launching script on Windows

[GRASS GIS]

#2532: TypeError: environment can only contain string when launching script on
Windows
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 Reporter:  annakrat     |       Owner:  grass-dev@…              
     Type:  defect       |      Status:  new                      
 Priority:  major        |   Milestone:  7.0.0                    
Component:  Default      |     Version:  svn-trunk                
 Keywords:  encoding     |    Platform:  MSWindows 8              
      Cpu:  Unspecified  |  
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Comment(by glynn):

 Replying to [ticket:2532 annakrat]:

 > The problem is the script path is unicode type (although I am using only
 ascii letters).

 wxPython uses Unicode for almost everything. So retrieving the contents of
 a text field will return a Python unicode value.

 > The solution is to encode the script path, but with which encoding? And
 how it is going to be decoded?

 It won't be decoded. The byte string will be available to the called
 program as a char* via getenv() (for C) or os.environ (Python).

 > A temporary solution is to reject any scripts with path with non-ascii
 letters and just use `str()`.

 wxGUI's core.gcmd module has EncodeString() and DecodeString() methods
 which use whatever wxGUI considers to be the "system" encoding. Those are
 used by gcmd.Popen for converting the arguments to strings and by
 gcmd.RunCommand() for converting the process' output to unicode.

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Ticket URL: <http://trac.osgeo.org/grass/ticket/2532#comment:1>
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